2627944021 has 4 divisors (see below), whose sum is σ = 2640398944. Its totient is φ = 2615489100.

The previous prime is 2627944003. The next prime is 2627944027. The reversal of 2627944021 is 1204497262.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2627944021 - 2¹³ = 2627935829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2627944027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6227145 + ... + 6227566.

It is an arithmetic number, because the mean of its divisors is an integer number (660099736).

Almost surely, 2^2627944021 is an apocalyptic number.

It is an amenable number.

2627944021 is a deficient number, since it is larger than the sum of its proper divisors (12454923).

2627944021 is a wasteful number, since it uses less digits than its factorization.

2627944021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12454922.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 2627944021 is about 51263.4764817994. The cubic root of 2627944021 is about 1379.9775990553.

It can be divided in two parts, 262794 and 4021, that added together give a triangular number (266815 = T₇₃₀).

The spelling of 2627944021 in words is "two billion, six hundred twenty-seven million, nine hundred forty-four thousand, twenty-one".